Results 91 to 100 of about 104,281 (223)
Physical Review ResearchWe utilize the theory of local amplitude transfer (LAT) to gain insights into quantum walks (QWs) and quantum annealing (QA) beyond the adiabatic theorem. By representing the eigenspace of the problem Hamiltonian as a hypercube graph, we demonstrate that
Sebastian Schulz +2 more
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Emergence of Classical Random Walk from Non-Hermitian Effects in Quantum Kicked Rotor
EntropyWe investigate the quantum random walk in momentum space of a spinor kicked rotor with a non-Hermitian kicking potential. We find that the variance in momentum distributions transitions from quadratic to linear growth over time for the non-Hermitian case.
Wenxuan Song +4 more
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QUANTUM WALKS ON SIERPINSKI GASKETS [PDF]
International Journal of Quantum Information, 2013 We analyze discrete-time quantum walks on Sierpinski gaskets using a flip-flop shift operator with the Grover coin. We obtain the scaling of two important physical quantities: The mean-square displacement, and the mixing time as function of the number of points.
Lara, Pedro Carlos S. +2 more
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Quantum Walks, Weyl equation and the Lorentz group
, 2017 Quantum cellular automata and quantum walks provide a framework for the foundations of quantum field theory, since the equations of motion of free relativistic quantum fields can be derived as the small wave-vector limit of quantum automata and walks ...
Bisio, Alessandro +2 more
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Quantum Walks with Encrypted Data [PDF]
Physical Review Letters, 2012 4 pages, 2 ...
Rohde, P.P. +2 more
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Quantum magic in discrete-time quantum walk
Physical Review ResearchQuantum magic, which accounts for the nonstabilizer content of a state, is essential for universal quantum computation beyond classically simulable resources. However, the way magic builds up during structured unitary dynamics remains largely open. Here,
Vikash Mittal, Yi-Ping Huang
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Quantum sensing of noises in one and two dimensional quantum walks
Scientific Reports, 2017 Quantum walk (QW) provides a versatile platform for the realization of quantum algorithms. Due to the existence of the inevitable noises in the walk, the different quantum algorithms accommodating to different noises are demanded.
Tian Chen, Xiong Zhang, Xiangdong Zhang
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Discrete-time quantum walk with feed-forward quantum coin
, 2014 Constructing a discrete model like a cellular automaton is a powerful method for understanding various dynamical systems. However, the relationship between the discrete model and its continuous analogue is, in general, nontrivial. As a quantum-mechanical
Horikawa, Junsei +2 more
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The role of coherence on two-particle quantum walks
Open Physics, 2015 We investigate the dynamical properties of the two-boson quantum walk in systems with different degrees of coherence, and where the effect of the coherence on the two-boson quantum walk can be naturally introduced. A general analytical expression for the
Lu Li-Hua, Zhu Shan, Li You-Quan
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Implementing the one-dimensional quantum (Hadamard) walk using a Bose-Einstein Condensate
, 2006 We propose a scheme to implement the simplest and best-studied version of quantum random walk, the discrete Hadamard walk, in one dimension using coherent macroscopic sample of ultracold atoms, Bose-Einstein condensate (BEC).
A. Ambainis +10 more
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